285/35R23 tire size
285/35R23 is a metric size: 30.9" tall, 11.2" wide, on a 23" rim — about a 31x11.00R23. The sidewall is 3.9" and the tire turns 654 times per mile.
285/35R23 specs
| Overall diameter (height) | 30.85" · 784 mm |
|---|---|
| Section width | 11.22" · 285 mm |
| Sidewall height | 3.93" · 100 mm (35% of width) |
| Rim diameter | 23" |
| Circumference | 96.93" · 2.462 m |
| Revolutions per mile | 654 (406 per km) |
| Inch (flotation) equivalent | 31x11.00R23 |
Equivalent sizes on a 23" rim
Sizes within ±5% of the overall diameter. Green rows are inside the usual ±3% limit for keeping the speedometer, ABS and gearing right; red rows are bigger changes that need clearance checks.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 295/35R23 | 31.13" | +0.89% | +10 mm | 60.5 mph | calculate → |
| 315/30R23 | 30.44" | -1.34% | +30 mm | 59.2 mph | calculate → |
| 325/30R23 | 30.68" | -0.57% | +40 mm | 59.7 mph | calculate → |
| 335/30R23 | 30.91" | +0.19% | +50 mm | 60.1 mph | calculate → |
| 255/40R23 | 31.03" | +0.57% | -30 mm | 60.3 mph | calculate → |
| 305/35R23 | 31.41" | +1.79% | +20 mm | 61.1 mph | calculate → |
| 275/40R23 | 31.66" | +2.62% | -10 mm | 61.6 mph | calculate → |
| 275/35R23 | 30.58" | -0.89% | -10 mm | 59.5 mph | calculate → |
| 295/30R23 | 29.97" | -2.87% | +10 mm | 58.3 mph | calculate → |
Try another size against 285/35R23
Questions
What size is 285/35R23 in inches?
285/35R23 is about 30.9" tall and 11.2" wide on a 23-inch rim — roughly a 31x11.00R23 in inch sizing.
What does 285/35R23 mean?
285 mm section width, sidewall 35% of the width (3.93"), radial construction, 23-inch rim.
What tire sizes are equivalent to 285/35R23?
On the same 23" rim, within 3% of the diameter: 335/30R23 (+0.19%), 255/40R23 (+0.57%), 325/30R23 (-0.57%), 295/35R23 (+0.89%), 275/35R23 (-0.89%), 315/30R23 (-1.34%).
How many revolutions per mile does a 285/35R23 tire make?
About 654 revolutions per mile (circumference 96.9").
How these numbers are computed
Diameter = rim + 2 × sidewall, sidewall = width × aspect ÷ 100, circumference = π × diameter, revolutions per mile = 63,360 ÷ circumference. Real tires differ by brand by a few tenths of an inch. Last reviewed October 14, 2026.